3993990101 has 2 divisors, whose sum is σ = 3993990102. Its totient is φ = 3993990100.

The previous prime is 3993990083. The next prime is 3993990139. The reversal of 3993990101 is 1010993993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3268980625 + 725009476 = 57175^2 + 26926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3993990101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3993990401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996995050 + 1996995051.

It is an arithmetic number, because the mean of its divisors is an integer number (1996995051).

Almost surely, 2^3993990101 is an apocalyptic number.

It is an amenable number.

3993990101 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993990101 is an equidigital number, since it uses as much as digits as its factorization.

3993990101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59049, while the sum is 44.

The square root of 3993990101 is about 63198.0229200250. The cubic root of 3993990101 is about 1586.6056434751.

The spelling of 3993990101 in words is "three billion, nine hundred ninety-three million, nine hundred ninety thousand, one hundred one".